Figure 5-5 -Refer to Figure 5-5.Using the Midpoint Method,demand Is Unit Elastic

Multiple Choice

Figure 5-5
-Refer to Figure 5-5.Using the midpoint method,demand is unit elastic between prices of

A) $20 and $40.
B) $40 and $50.
C) $40 and $60.
D) $50 and $70.